Hello
Many hugs as this can be a very tough time.
TBH, the 5am WU at this time is very common and developmental. At this age you cannot really create habits so I would continue bringing him to bed or do whatever possible to get him back to sleep. I went through it myself again a few months ago, and I would simply bring him to bed and latch him on or turn on the swing and get him in! Survival mode
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...this never became a habit and he soon slept through the 5am.
He's very little so this is all just normal and developmental. No matter what, chances are they will continue as he adjusts his nights in a few more weeks. Then there's more disruption coming your way again
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the joys of the first year
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haha!
Hang in there mom. In the mean time make sure there isn't any noises or outside light that can be causing an EW. Give him sometime to adjust. He's so tiny still xo